<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <!-- 表单里要提交后端的数据表单元素必须要写name属性 -->
  <form action="./02.php">
    卡号：<input type="text" name="card">
    密码：<input type="password" name="pwd">
    <button>取钱</button>
  </form>
</body>
</html>